This study compared the effects of 1-set versus 3-sets of resistance training over an extended 25-week period to see if differences or similarities persist over such a duration.

It was found that both forms of training produced similar long-term muscular strength and muscular endurance improvements. There was a suggestion that the 3-set group improved more in muscular endurance.

Implication. One-set is as effective as three-set strength training for developing strength. Both conditions improve muscular endurance but the three-set protocol probably develops it more.